Lock-switch.



W.- H. PARKER.

LOCK SWITCH- APPLICATION map @ULY a1 1916.

Patented Aug. 20, 1918.

' YWILLIAM' PARKER, or LEIrsIo o iiinr'rnn srariis Parana orrion i0, assrenon ro THE Trnvroo nLEo'rR'Io' Moron.

COMPANY, OF nirsro; 01110, A oonronA'rioiv or 01110.

LOCK-SWITCH.

To all whom, it may concern:

Be it known that I, WILLIAM H. PARKER,

a citizen of the United States, and a residentor Leipsic, in the county of Putnam and State of Ohio,have'invented a certain new and useful Lock-Switch; and I do hereby declare the following to be a full,

clear, and exact description of the inveninclosing a switch and locking the inclosingmeans and the means for operating the switch. It also has for its object to pro- 20' vide suitable stops for the switch which form a part of the locking means. It also has for its object to provide an efficient durable lock switch which may be readily as sembled and may be made at a low cost.

Structures containing the invention may partake of different forms. I have shown in the drawings a preferred form of the structure.

.lligure 1 of the drawings is a front view of the lock switch containing my invention.

Fig. 2 is a view of the switch, the locking parts being removed.

Fig. 3 is a rear view of the cover showing the locking parts secured thereto. Fig. 1 is a sectional view taken on the line et-1 indicated in Fig. 1. Fig. is a perspective view 01 the shell which contains the locking barrel. Fig. 6

illustrates a lock plate.

1, Fig. 1, is a switch" block which is formed of an insulating material and is recessed to form an inclosmg casing.

an arcuate contact 3 and is inoved so as to complete a circuit through the contact 3 from the contact 4 to the contact 5 or from the contact 4 to the contact 6, which are secured to the bottom of the insulating block 1 by suitable nuts and screws. The block 2 is rotated by the arm 7. An external circuit, such as for engine ignition, is connected to the contacts 1, 5 and 6 in any suitable manner.

The block 2 is closed by the cover 10 and .eccentrically thereto.

' Specification of Letters Patent. te t 20, 1918 Application filed July31,191. Serial no. 112,311. r V l through the center ofithe cover 10 is inserted a. shell 11 having a locking barrel 12 or any of the forms well known in the art.

The arm 7 is keyed to the'shell 11 for purposes of rotating the shell 11 relative to the switch block 1. A ring 13 is secured to the shell 11 on the insidefofthe cover 10 to prevent axial movements of the shell relative to the cover and yet permit rotative movementsof the shell. If desired a looking ring 1 1 may be threaded onto the shell 11 to securethe ring 13 in its position. A plate 15 is secured to the inner end of the shell llby means of screws 16. The plate is provided with lugs 17, which may be struck up from the plate 15,while the shell 11 is provided with lugs 18, which fit into the spaces formed by the striking up of the lugs 17. The lugs'17 are located at a dis tance from each other substantially equal to their width, that is,-'their outsidetrans- The verse measurements .form a square.

having an opening or hole 21 into which the lugs 17 may readily slip' and thus connect the block 2 to the shell 11. The opening in the construction shown is made square to key the hub 20 to the locking means. When the cover 10' is placed'upon the block 1 the lugs 17 will enter the hole 21 and thus the block 2 will be keyed to the shell 11v and will'be rotated when the shell 11 is rotated by the arm 7. I

The barrel 12 is provided with a pin 25, which is located at one end of the barrel and A look plate 26 is slidably movable between the end of the shell plate 26 is provided with a slot 27 into which the pin extends so that as the barrel 12 is rotatedby the operation of a key the pin25 .will'shirt the plate 26 relative to the end of the shell 11. The lock plate 26 isfprovided with projections 28 and 29. A plate 30' is secured to the cover 10. The plate 30 is. also provided with projections 31' and 32 and 33,

which are located in the path of movement or one or the other extensions 28 or 29 formed on the lock plate 26. The projections 31 on the plate 30 are disposed apart about the width of the projection 28, while the projections 32 and 33 are disposed at a distance which angularly measures the same as that in which the switch member 3 is rotated to make contact between the contacts 11, the plate 15 and the lugs 18. The lock position.

4 and 5 or 4 and 6. When the lock plate 26 is moved in one direction by the operation oi the pin the projection 28 will be inserted between the projections 31 and the arm will be locked in position and so that the contact 3 will make contact only with the contact a. Rotation will be prevented in either direction by the projection 28 engaging with either of the projections 31. When, however, the lock plate 26 is movedso as to draw the projection 28 from between the projections 31, the projection 29 will be extended outward so as tostrike either the projection 32 or 33 when theswitch arm 7 is swung to the right or to the left, when atthesame time a circuit will be completed between the contacts 4 and 5 or 4 and 6. The projection 29, when the contact 3 is well placed so as to make good connection will strike against one or the other of the projections 32 or 33 and thus prevent further rotation of the arm. The projections 32 and 33 thus form limiting stops to prevent rotation of the switch member3 beyond that of makinggood circuit connections between its associated contacts. The projection 28 is then placed in such a position that the plate 26 cannot be moved by the barrel 12 as it, will strike one or the other of the projections 31. Means is thus provided for preventing the locking of the switch unless the circuits are broken by the switch. The plate is provided with a lip 35, which extends into the switch block 1 and engages a lip 36. When the cover is placed onthe switch block the projections 17 are inserted in the opening 21 and the cover is slightly turned so as to cause engagement between the lips 35 and 36. The screws 37 and 38 are then threaded in the block.

The arm 7 is formed of a fiat strip of metal and is made relatively broad. The projections 31 and 28 are solocated on the shell 11 and the plate 30 as to lock the arm 7, which is keyed to the shell 11, in a certain A screw 40 is located in the cover and the block so thatits head is located intermediatethe arm 7 and the cover of the block and the screw cannot be removed when the arm is over the screw. The screw 40 thus forms a locking means to prevent the cover from being removed from the switch block when. the arm 7 is locked by the barrel 12. The screw 40 may thus be inserted onlywhen the barrel is unlocked so that the aini 7 may be turned to one side, and the screw 40 may not beremoved 'whenthebarrel '12 is in locking position.

7 The structure selected and described may be modified in the arrangement and manufactureof its parts and the substitution of elements having equivalent functions, and such modifications may still contain the invention.

What I claim is: h

1. In a lock, the-combination of a shell having a lock, an arm connected tothe shell for rotating the shell a rotative member connected to the arm throughtheshell, a fixed member having projections, a movable member having proj ections for engaging the projections of the first named member to lock the rotative member when'infone position and to limit the movements of the'rotative member when in another position.

2. In a lock, the combination'of a casing, a rotative member located in'the'casing', a shell, a locking means located in the shell, an arm connectedto the shell for rotatingthe rotative member, a cover for inclosin'g the rotative member and supportingthe' shell for rotative movements, a plate secured to the cover and having projections, a second plate located on the end ofthe shell and movable transversely relative to the end of the shell and the first named plate and having projections for engaging the projections of the first named plate to lockthe shell and the rotative member from rotation'and to limit the movement of the rotative member and'the arm in their rotative movements.

3. In a lock, the combination of a shell having a lock, an arm connected to the shell for rotating the shell, a rotative member connected to thearm through the s'hell,a fixed member having projections, a movable member having projections for engaging the projections of the first named member to lock the rotative member when in one position and to limit the movements of the rotative member when in another position, a casing for containing'the rotative member, a cover for closing the casing, and a"loc'king means forlocking-the cover to the casing.

In testimony whereof, I have hereunto signed my name to this specification.

l/VILLIAM H. PARKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner, of Patents, Washington, I). G. 

